It's becoming a little clearer how Windows 10 has performed in the first month since it became available.
According to the data from Net Market Share, devices running Windows 10 accounted for 5.2 percent of PCs connecting to the internet last month. Windows 7 has 58 percent of the market in the same month (down from 61 percent in July).
According to the company's data, that means Windows 10 has become the fourth most popular PC operating system in use in just one month. Unsurprisingly it is taking market share from Windows 8.1 (perhaps because that's the easiest version to upgrade to Windows 10 from) but also some from Windows 7, seen by many as their rock-solid version of Windows.
The rise of Windows 10 seems to have had little impact on Windows XP, which still holds onto around 12 percent of the market, 14 years after it was launched and 16 months after Microsoft stopped supporting it. Part of XP's constant showing is that most of the hardware running Windows XP is likely too old to run Windows 10, but also it's because the Windows 10 free upgrade offer is only open to Windows 7 and 8.1 devices.
Data from StatCounter tells a similar story - continued steady growth in Windows 10 usage. It calculates that Windows 10 has a 6.1 percent share of the desktop and tablet market, again growing at the expense of Windows 8 and Windows 7. StatCounter said that in the first calendar month since launch, Windows 10's worldwide usage share "far exceeds" that of Windows 8 and Windows 7.
"Windows 10 came out of the traps much faster than Windows 8 and also exceeded the launch of Windows 7," said Aodhan Cullen, CEO of StatCounter.
It's worth remembering that these are usage stats not downloads, but it's still a reasonably good indicator of how the new operating system is growing. The official download numbers from Microsoft revealed late last month are that more than 75 million devices are now running Windows 10. The figure includes more than 90,000 different PC or tablet models - even some devices manufactured as long ago as 2007.
It's impressive growth - but of course for the most part Windows 10 is free download, so it would be a surprise if it wasn't doing as well as this. Now the first wave of early adopters and easier upgrades are out of the way, the next question is how that usage grows over the next few months.
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